Remote code execution in Microosft Windows DNS Server

Published: 2018-12-11
Severity High
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2018-8626
CWE ID CWE-122
Exploitation vector Network
Public exploit N/A
Vulnerable software Windows Server Subscribe
Windows
Vendor Microsoft

Security Advisory

This security advisory describes one high risk vulnerability.

1) Buffer overflow

Severity: High

CVSSv3: 8.5 [CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2018-8626

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing DNS requests. A remote attacker can send a specially crafted DNS request, trigger heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Windows Server: 1709, 1803, 2012 R2, 2016, 2019

Windows: 10 1607, 10 1709, 10 1803, 10 1809

CPE External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8626

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.